Resene Professional Development - exterior cementitious surfaces

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Resene Professional development programme Previously painted – in good condition Treat moss and mould with Resene Moss & Mould Killer Thoroughly wash using Resene Roof Wash and Paint Cleaner Spot prime any bare flaked or cracked areas Fill cracks and voids - Cracks under 1mm, use Resene Brushable Crack Filler - Cracks over 1mm, use Selleys No More Gaps exterior formulation or similar - Holes and voids, use either Resene Jointflex or an approved masonry filler Refer to topcoat systems flowcharts 5
Resene Professional development programme • What is the condition of the surface • Does it have any moss or mould present • Are there any cracks or voids that will need filling • What is the approximate size of the area to be painted - how smooth or rough is the surface Previously painted – in good condition • Typically repainting a sound paint system that has been applied over a cementitious surface is straightforward, because the substrate is inert and doesn’t usually cause any stress on the paint, unlike substrates like timber. As a result there are generally only three areas that need addressing: i) Mould and moss will need to be killed and removed – use Resene Moss & Mould Killer. ii) While the surface may be power-washed it is easier to clean using Resene Paint Prep and Housewash. This is much more effective at removing surface chalking (old oxidised paint) from the old paint than waterblasting. iii) Any cracks or holes that need filling may need either an application of Resene Brushable Crack Filler or a suitable filler, such as Selleys Masonry Filler. • While sealants are unlikely to be needed on the concrete or cementitious substrate itself they may be required at the interface between the substrate and window flashings etc. • Refer to the Resene Average rates for painting TM for the costs per square metres needed for the materials and time. • Don’t forget to add on the costs of difficult access or travelling etc you may have to allow for. • FACTORS are the time required for most painters for every square metre of work. Factor x Area gives you the hours you will use. • Do a good job for a fair price - customers like to skite about it. Call 1800 738 383, visit www.resene.com.au or email us at advice@resene.com.au Call 0800 RESENE (737 363), visit www.resene.co.nz or email us at advice@resene.co.nz 6
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Resene Professional Development - exterior cementitious surfaces

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